Antislipping device for wheels.



W. IVHELKE.

ANTISLIPPING DEVICE FOR WHEELS.

A P P L l C A T I 0 N E L E D M A Y 1 5 I 9 l 6.

L1 9mm Patented Sept. 5, 1916.

2 SHEETS-SHEET'I- llllllllk' W. MIELKE.

ANTISLIPPING DEVICE FOR WHEELS.

APPLlCATlON FILED MAY 15, 1916.

Patented Sept 5, 1916.

2 SHEETSSHEET 2.

I BTIIIIIIIIIII WILLIAM C. F. MIELKE, OF HOWARD LAKE, MINNESOTA.

ANTISLIPPING DEVICE FOR WHEELS.

Application filed May 15, 1916. Serial No. 97,709.

To all whom it may concern.-

Be it known that I, WILLIAM C. F. MIELKE, a citizen of the UnitedStates, residing at Howard Lake, in the county of Wright, State ofMinnesota, have invented certain new and useful Improvements inAntislipping Devices for Wheels and I do hereby declare the followin tobe a full, clear, and exact description 0 the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to an anti-slipping device for Wheels.

An object of the invention resides in the provision of a device forpreventing the slipping of the wheels of a vehicle, which means isrendered operative simultaneously with the application of the brakes.

A further object of the invention resides in so constructing the devicethat it will be in no way injurious to the tires of the vehicle wheels.

With these and other objects in view, such as will appear as mydescription progresses, my invention comprises the combination andarrangement of parts as set forth in and falling within the scope of theappended claims.

In the drawing: Figure 1' is an elevational view of the inside of awheel showing a device constructed in accordance with my inventionmounted thereon; Fig. 2 is an elevational View looking at the edge ofthe wheel; Fig. 3 is a vertical sectional view of a portion of thedevice showing the manner in which the slide is mounted; Fig. 4 is asimilar view taken at right angles to Fig. 3 and showing the form of theactuating cam; Fig. 5 is a sectional view on line 55 of Fig. 3; Fig. 6is a plan view showing the controlling means for the brake; Fig.7 is adetail showing the manner in which the brake band is supported, and Fig.8 is a sectional view showing the manner in which the controlling leveris mounted,

In the drawing I have illustrated an automobile wheel conventionally,which wheel includes a hub 1, spokes 2, a felly 3 and a tire 4.

In order that the wheel may be prevented from skidding I. have secured adrum 5 to the hub 1 by means of bolts 6, which drum is provided withflanges 7 and 8. A brake drum 9 is provided, which drum is rotatable onthe drum 5 and bears against the inner Specification of Letters Patent.

Patentedfieptfi, IWHH.

flange 8, at 10. An annular plate 11 is provided which issecured bysuitable means 12 to the flange 7 ofsthe drum 5, which plate cooperateswith the drum 9 to close the drum 5. A cam Wheel 18 is secured, by meansof screws 14, to the drum 9 and lies within the drum 5, being held inspaced relation to the wall thereto by means-of a projection 15. Thiscam wheel rotates on the flange 8 as will be readily observed from thedrawing and is provided with a plurality of cam fingers 16 withdepressions 17 therebetween. An annular plate 18 is se cured by means ofbolts 19 to the felly 3 of the wheel and extends inwardly therefrom.This plate 18 is provided with a plurality of openings 20, in whichopenings sleeves 21 are slidably mounted. These casings are provided, attheir outer ends, with spurs 22 which are held therein by bolts 23.Slides 24 extend into the inner ends of the sleeves and are slidabletherein, the movement being limite'd by the engagement of pins 25 whichare secured to the slides and extend through slots 26 in the sleeves.The sleeves and slides are normally pushed apart by means of springs 27which are located in the sleeves and interposed between the ends of theslides and the inner ends of the spurs 22. The inner ends of the slides24: extend through openings in the flange 7 of the drum 5 and areprovided with rollers 28 which ride upon the cam fingers 16 of the camwheel 13 as the latter is rotated with respect to the drum 5. v

When the device is in its normal position, that is to say, when thewheel is operating without necessitating the use of the antislippingdevice, the rollers 28 will be located in the depressions 17 in thewheel 13 and the spurs 22 will be drawn inwardly by means of coilsprings 29 which are secured to the sleeves 21 as illustrated in thedrawing. Now as the brake drum 9 rotates with the wheel, the relativepositions of the cams 16 and the rollers 28 will remain the same so thatthe spurs 22 will not be pushed beyond the periphery of the wheel. When,however, the brake is applied so that the drum 9 is arrested the wheel13 will likewise be arrested and consequently as the vehicle wheelrotates the rollers 28, which move with the wheel, will ride to thepoints of the cams 16 so that the slides and sleeves will be forcedoutwardly to cause the spurs 22 to penetrate the ground, the shock ofthe penetration l l l T the operator so vented.

In order that the movement of the brake drum ma} be arrested, I haveprovided a brake band 30 which is secured to a crank portion 31 on oneend of an operating rod 32. This operating rod extends between and isrotatably mounted in a bearing 33 on the rear radius rod of the vehicle.In order that this rod 32 may be rotated, I have provided the same witha crank portion 34 to which a link 35 is connected, which link isconnected at its other end to a lever 36 which is adapted to be locatedadjacent the seat of that the application of the brakes andtheanti-slipping device will be under. his control. Secured to the brakeband 30 is a casting 37 which is provided with a slot 38 and in which aspring 39 is located. An arm 40 is pivoted to the brake drum and has apin which extends into the ..I i slot 38 and is normally held in theupper end i thereof by the spring 39. This arm 40 maintains the brakeband in spaced relation to the brake drum when the former is not inuse'and thus prevents any rattling.

While -I have described only the mechanism as applied to one wheel it istobe understood-that this is duplicated on the other wheel.

It willfthus be seen that I have provided an anti-slipping device forvehicles which is so constructed that it Will not interfere with thetires of the wheel of the vehicle and so that it will be appliedautomatically with the application of the brakes.

While I have illustrated and described a particular embodiment of myinvention, it

as merely been for the sake of convenience and I do not wish to belimited to that particular embodiment as it is obvious that numerouschanges may be made in the details of construction without departingfrom the spirit of the invention or exceeding the scope of the appendedclaims.

What I claim is 1. The combination with a vehicle wheel, of a drummounted thereon andhaving a pair of spaced inwardly extending flanges,an annular plate secured to the felly of the wheel in parallel relationto the flanges, a slide mounted in the annular plate and in one flangeof the drum and having means on the end thereof for penetrating theground, a roller on the inner end of the slide, a cam wheel rotatablymounted within the drum and means for maintaining said cam wheelstationary so as to cause the slide to move outwardly through the flangeand the aforementioned annular plate.

2. The combination with a vehicle wheel, of an annular plate secured tothe felly thereof and extending at right angles to the plane of thewheel, a sleeve slidabiy mounted in the plate and having a spur in theend thereof, a slide slidably mounted in the sleeve, means for limitingthe sliding movement between the sleeve and slide, resilient meansnormally tending to force said slide and sleeve apart, a brake drum andmeans operated by the brake drum for moving said sleeve outwardly.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

WILLIAM C. F. MIELKE.

Witnesses:

O. P. CoMER, H. A. WECKWERTH.

